Harrow



3 SheetsSheet 1 O. H. EDDY.

(N5 Model.)

HARROW.

No. v332,706. Patented Dec. 22, 1885.

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(No Model.)

HARROW.

Patented Dec. 22, 1885.

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OSCAR HERBERT EDDY, OF GREENWIOH, NEW YORK.

HARROW.

SPECIFICATION forming part of Letters Patent No. 332,706, dated December 22, 1885.

Application filed June 9, 1885. Serial No. 168,100. (No model.)

To all whom it may concern:

Be it known that I, OSCAR HERBERT EDDY, of the village of Greenwich, county of VVashington, State of New York, have invented a new and useful Improvement in Harrows, of which the following is a specification.

My invention relates to certain improve ments in harrows, and the objects and purposes of my invention are to make the teeth of the barrow adjustable within the frame as to the extent they shall project below the latter; to arrange the teeth within the frame so that the harrow when being drawn in one direction can be used with the teeth at or nearly at right angles to the frame for furrowing. and

by reversing the line of draft the points of the same teeth will by automatic adjustment slant back from the line of motion for use as a smoothing-harrow, to make the harrow adjustable to the surface over which it is drawn by means of a hinged connection between the teeth-bars, and also to adapt the harrow to be rolled up on said hinged connection when not in use.

Accompanying this specification, to form a part of it, there are three plates of drawings,

v containing SlX figures illustrating my invention, with the same designation of parts by letters of reference used in all of them.

Of these illustrations, Figure 1 shows a perspective of my improved harrow. Fig. 2 shows the same as folded up on its hinged connection. Fig. 3 represents a cross-section taken through one of the teethbar's, the socketsleeve for the teeth, and hinging-pins, which hold the teeth in place. Fig. 4 shows a section taken longitudinally through one of the teeth-bars, its socket-sleeve, and one of the teeth. Fig. 5 is a perspective of one of the teeth. Fig. 6 shows an enlarged representation of the hinged connection made between two of the teeth-bars at one of their ends.

The several parts of the harrow and those containing my invention are designated by letters of reference, and the function of the parts is described as follows:

The letters B designate the teeth-bars, and T the harrow-teeth.

The letters H designate the connecting bars or straps, composed of a series of metallic straps or bars, b S, having their ends pivotally connected, and each bar being formed with a central depending seat, 1) b respect ively, to receive the teeth-bars of the harrow, the strap being secured to the teeth-bars by means of threaded bolts, substantially as seen in the drawings. The straps or bars I) are provided with eyes E in each end, and have one end slightly curved or struck upward and the other end slightly curved or struck downward. The straps S have hooks formed on the ends, which engage with the eyes in the straps I), thus forming a hinged or pivotal connection between the bars. The curved ends of the straps admit a better connection and adapt the parts to readily fold up, as shown in Fig. 2 of the drawings.

The letters S" designate sleeved sockets. which are made of a single piece and inserted within holes formed in the teeth-bars to receive the harrow-teeth. These sleeves interiorly at their ends, about midway between the top and bottom, are made narrower in their horizontal measurement from front to rear by means of oppositely-arranged inclines and vertical end parts, and where thus contracted they have a cross-passage, O, for a bolt or hinging-pin, P, which also passes through a recess, 0 produced in one side of the harrow-tecth, when the latter are within the sleeve. As thus connected within the sleeve the barrow-teeth are free to move back and forth from a vertical position to a slant on the bolt or pin P, to a limited extent, in a line parallel to the teeth-bars. The apertures in the teeth-bars are formed, preferably, with three vertical sides and one inclined side, the latter to serve as a seat for the tooth socket or sleeve and keep it from dropping down. The exterior of the tooth sockets or sleeves are formed to fit the apertures in the teethbars, and are formed with a tooth-hole to receive the tooth. The side walls of the toothsleeve are vertical, and sustain the tooth in vertical position in that direction. One wall of the tooth-sleeve, as indicated at I, is vertical for about one'half of its length from the top, from whence it is flared or inclined, substantially as shown at I". The opposite wall has its upper part flared or inclined outward, as seen at I and the lower portion is vertical, as seen at 1 and in the middle of this wall,

or at the pivotal point for the tooth, is formed a transverse circular seat, 0'. The teeth T are provided with transversely-arranged circular grooves O, which may be on one or both sides. When the tooth is passed through the sleeve, it is 'arranged with. one of the grooves O coinciding with the groove 0, and a pivotpin, P, is passed through a side aperture, a, in the tooth-bar and into the hole formed by the adjusted grooves in the tooth and sleeve, whereby the tooth is held in position against vertical displacement, yet free to move to an, inclined position on the pivot-pin P, being limited in such movements by the inclines of the sleeve. In a reverse movement of the harrow the tooth is vertical, being held by the vertical parts of the end walls of the sleeve.

The positions assumed by the tooth are shown in Fig. 4, wherein the inclined position is shown in dotted lines, as m, and the courses of the implement indicated by arrows A and A By means of the hinged connection H, made between the teeth-bars, the harrow adapts itself to uneven ground when passing over it, and adjusts itself to obstructions.

By means of the hinged connection the harrow may be folded up, so as to take less room when stored.

The sleeves for the teeth perform their function, as described, independently of the hinging connection made between the teeth-bars, and hence may be used in a rigid barrow, if desired. As thus secured the teeth do not become loosened to drop out, as is the case where simply driven through the bars, and when worn off at the point in one direction they may be taken out and reversed in position relatively to the wear by means of the recesses O in the sleeve and O in the teeth and the pin P.

The letters N designate holes in the ends of I the teeth-bars for connecting the draft attachmentsD at either end, so that the harrow as constructed can be drawn in the direction indicated by the arrows A or A and thus be 5 used forfurrowing or as a smoothing-harrow.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In combination, the teeth-bars formed with apertures having an inclined or tapered seat, and side apertures, a, the teeth sockets or sleeves S3, made in a single piece, having an inclined side to set in the seat of the apertures in the teeth-bars, and formed with a tooth-passage through them, having vertical side walls, an end Wall with a vertical upper portion and a flaring lower portion, and an end wall having a vertical lower portion and a flaring upper portion, and an intermediate 6:) circular seat transversely arranged, the teeth formed with transverse grooves 0 and the pivot-pin P, projected through the side aperture of the teeth-bars into the hole formed between the tooth and circular seat, substan- 6 tially as described, and for the purpose stated.

2. In combination with the teeth-beams, the bars or straps b, formed with a depending seat,

12, and ends vertically curved in opposite directions, and formed with eyes E, the bars or 7 straps S, formed with a depending seat, b and hooked ends adapted to engage with the eyes in the curved ends of the straps b, and bolts to hold the straps to the under side of the beams, whereby the harrow can be folded up, 7 substantially as described. 7

Signed at Troy, New York, this 18th day of May, 1885, and in the presence of the two witnesses whose names are hereto written.

OSCAR HERBERT EDDY.

Witnesses:

OHARLEs S. BRINTNALL, O. H. SHEPARD. 

